[SECURITY] [DSA 3421-1] grub2 security update

From:

Luciano Bello <luciano@debian.org>

To:

bugtraq@securityfocus.com

Cc:

Subject:

[SECURITY] [DSA 3421-1] grub2 security update

Date:

Wed, 16 December 2015 20:05 GMT

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Debian Security Advisory DSA-3421-1 security@debian.org
https://www.debian.org/security/ Luciano Bello
December 16, 2015 https://www.debian.org/security/faq
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Package : grub2
CVE ID : CVE-2015-8370
Debian Bug : 807614
Hector Marco and Ismael Ripoll, from Cybersecurity UPV Research Group,
found an integer underflow vulnerability in Grub2, a popular bootloader.
A local attacker can bypass the Grub2 authentication by inserting a
crafted input as username or password.
More information:
http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html
For the oldstable distribution (wheezy), this problem has been fixed
in version 1.99-27+deb7u3.
For the stable distribution (jessie), this problem has been fixed in
version 2.02~beta2-22+deb8u1.
For the unstable distribution (sid), this problem has been fixed in
version 2.02~beta2-33.
We recommend that you upgrade your grub2 packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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